CN203352465U - DC stabilized power supply suitable for oil field and oil well remote measurement and control system - Google Patents
DC stabilized power supply suitable for oil field and oil well remote measurement and control system Download PDFInfo
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- CN203352465U CN203352465U CN 201320471490 CN201320471490U CN203352465U CN 203352465 U CN203352465 U CN 203352465U CN 201320471490 CN201320471490 CN 201320471490 CN 201320471490 U CN201320471490 U CN 201320471490U CN 203352465 U CN203352465 U CN 203352465U
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- power supply
- voltage
- switching power
- npn type
- type triode
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Abstract
The utility model discloses a DC stabilized power supply suitable for an oil field and oil well remote measurement and control system. The DC stabilized power supply comprises an ultrahigh-voltage protection circuit, an industrial frequency transformer, a switch power supply chip input terminal overvoltage protection circuit and multiple groups of switch power supplies. The ultrahigh-voltage protection circuit is connected with the industrial frequency transformer, the industrial frequency transformer is connected with the switch power supply chip input terminal overvoltage protection circuit through a rectification circuit, and the switch power supply chip input terminal overvoltage protection circuit is connected with the multiple groups of the switch power supplies. The DC stabilized power supply works normally when a voltage of AC 220V-550V is input; the DC stabilized power supply is automatically protected when the voltage is over AC 550V, and the DC stabilized power supply is in a normal working state automatically when the input voltage is restored; and a fuse wire is burned out when the input voltage is over 750V, and the DC stabilized power supply can work normally after the fuse wire is replaced when the input voltage is restored.
Description
Technical field
The utility model relates to a kind of D.C. regulated power supply, relates in particular to a kind of D.C. regulated power supply that is applicable to the oilfield remote measuring and controlling system.
Background technology
When development oilfield remote measuring and controlling system, need a kind of DC power supply meet on-the-spot power supply, this power supply AC380V input, some groups of direct currents export (+24V ,+12V ,+5V ,-12V).But the Alternating Current Power Supply on oil well is very unstable, can reach AC750V when unloaded, full load only has AC220V, common power supply, or when voltage is low cisco unity malfunction, or when voltage is high burning apparatus, can not adapt to this environment, need a kind of wide input voltage range (AC220-550V), cut off automatic recovery of power supply when voltage is normal while running into overtension (>550V) fully.
The utility model content
The purpose of this utility model is exactly in order to address the above problem, and has proposed a kind of D.C. regulated power supply that is applicable to the oilfield remote measuring and controlling system.The utility model power supply can work when AC220V-550V inputs; Surpass AC550V and automatically protect, it is upper that voltage to be entered recovers, and automatically enters normal operating conditions; When input voltage surpasses 750V, fusible link burns, and after input voltage recovers, changing fusible link can work.
To achieve these goals, the utility model adopts following technical scheme:
A kind of D.C. regulated power supply that is applicable to the oilfield remote measuring and controlling system comprises: superhigh pressure protective circuit, Industrial Frequency Transformer, switching power source chip input overvoltage crowbar, organize Switching Power Supply more; The superhigh pressure protective circuit is connected with Industrial Frequency Transformer, and Industrial Frequency Transformer is connected with switching power source chip input overvoltage crowbar by rectification circuit, and switching power source chip input overvoltage crowbar connects many group Switching Power Supplies.
Described superhigh pressure protective circuit is by fuse F, resistance R
1with piezo-resistance R
vbe composed in series.
Described switching power source chip input overvoltage crowbar comprises: voltage stabilizing didoe Z
1with biasing resistor R
2, R
3series connection, biasing resistor R
4with NPN type triode T
1series connection, voltage stabilizing didoe Z
2with current-limiting resistance R
6, NPN type triode T
2series connection, NPN type triode T
1base stage be connected to biasing resistor R
2and R
3between, biasing resistor R
5two ends meet respectively NPN type triode T
1collector electrode and NPN type triode T
2base stage, voltage stabilizing didoe Z
2two ends respectively with PMOS pipe T
3grid with source electrode, be connected.
Described voltage stabilizing didoe Z
1the voltage stabilizing value get the maximum input voltage 1-2V lower than chip.
The required direct voltage of described Switching Power Supply is realized by some groups of DC/DC translation circuits.
Operation principle is as follows: when input voltage is less than the voltage stabilizing value of voltage stabilizing didoe Z1, NPN type triode T1 cut-off, NPN type triode T2, T3 conducting, the voltage after rectification is fed to the DC/DC input, output all need to direct voltage, when input voltage surpasses voltage stabilizing didoe Z1 voltage stabilizing value, NPN type triode T1 conducting, NPN type triode T2, T3 cut-off, the DC/DC input is without input voltage, and all devices are without large power consumption, and circuit is in guard mode; Four groups of translation circuits that DC/DC is required voltage.
The beneficial effects of the utility model are:
The utility model power supply can work when AC220V-550V inputs; Surpass AC550V and automatically protect, it is upper that voltage to be entered recovers, and automatically enters normal operating conditions; When input voltage surpasses 750V, fusible link burns, and after input voltage recovers, changing fusible link can work.
The accompanying drawing explanation:
Fig. 1 is circuit diagram of the present utility model.
Wherein, 1. superhigh pressure protective circuit, 2. Industrial Frequency Transformer, 3. switching power source chip input overvoltage crowbar, 4. many group Switching Power Supplies.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
As shown in Figure 1, a kind of D.C. regulated power supply that is applicable to the oilfield remote measuring and controlling system comprises: superhigh pressure protective circuit 1, Industrial Frequency Transformer 2, switching power source chip input overvoltage crowbar 3, organize Switching Power Supply 4 more; Superhigh pressure protective circuit 1 is connected with Industrial Frequency Transformer 2, and Industrial Frequency Transformer 2 is connected with switching power source chip input overvoltage crowbar 3 by rectification circuit, and switching power source chip input overvoltage crowbar 3 connects many group Switching Power Supplies 4.
Described superhigh pressure protective circuit 1 is by fuse F, resistance R
1with piezo-resistance R
vbe composed in series.When voltage, lower than 750V, this circuit is inoperative, while surpassing 750V, and piezo-resistance R
vpuncture, and make fuse F fusing in moment, as long as fuse F value and resistance R
1value is selected appropriate, can guarantee piezo-resistance R
vreuse.
The specified input voltage of Industrial Frequency Transformer 2 is 550V, is output as 35V, and rated power calculates while pressing the 220V input.
Switching power source chip input overvoltage crowbar 3 comprises: voltage stabilizing didoe Z
1with biasing resistor R
2, R
3series connection, biasing resistor R
4with NPN type triode T
1series connection, voltage stabilizing didoe Z
2with current-limiting resistance R
6, NPN type triode T
2series connection, NPN type triode T
1base stage be connected to biasing resistor R
2and R
3between, biasing resistor R
5two ends meet respectively NPN type triode T
1collector electrode and NPN type triode T
2base stage, voltage stabilizing didoe Z
2two ends respectively with PMOS pipe T
3grid with source electrode, be connected.Voltage stabilizing didoe Z
1the voltage stabilizing value get lower than chip maximum input voltage 1-2V, as the chip maximum input voltage is 42V, optional 40V voltage-stabiliser tube, voltage stabilizing didoe Z
2for NPN type triode T
2the gate protection voltage-stabiliser tube, can be 12-15V usually, Vce>=100V, and operation principle is as follows: when input voltage is less than voltage stabilizing didoe Z
1the voltage stabilizing value time, NPN type triode T
1cut-off, NPN type triode T
2, PMOS manages T
3conducting, the voltage after rectification is fed to the DC/DC input, output all need to direct voltage, when input voltage over voltage stabilizing didoe Z
1during the voltage stabilizing value, NPN type triode T
1conducting, NPN type triode T
2, PMOS manages T
3cut-off, the DC/DC input is without input voltage, and all devices are without large power consumption, and circuit is in guard mode; Four groups of translation circuits that DC/DC is required voltage.
1 pair of protection higher than the above voltage of 750V of superhigh pressure protective circuit; The specified input voltage 550V of Industrial Frequency Transformer 2, when AC220V-550V inputs, guarantee that output voltage is at AC14-35V, while guaranteeing the 220V input simultaneously, and the power output that can provide equipment to need; The input voltage that switching power source chip overvoltage crowbar 3 cuts off all Switching Power Supplies 4 at input voltage during higher than 550V, guarantee late-class circuit safety, when voltage to be entered returns to 220V-550V, and de-preservation; Many group Switching Power Supplies 4 produce the direct voltage of above-mentioned needs by the buck or boost mode.
Although above-mentioned, by reference to the accompanying drawings embodiment of the present utility model is described; but be not the restriction to the utility model protection range; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection range of the present utility model.
Claims (5)
1. a D.C. regulated power supply that is applicable to the oilfield remote measuring and controlling system, is characterized in that, comprising: superhigh pressure protective circuit, Industrial Frequency Transformer, switching power source chip input overvoltage crowbar, organize Switching Power Supply more; The superhigh pressure protective circuit is connected with Industrial Frequency Transformer, and Industrial Frequency Transformer is connected with switching power source chip input overvoltage crowbar by rectification circuit, and switching power source chip input overvoltage crowbar connects many group Switching Power Supplies.
2. a kind of D.C. regulated power supply that is applicable to the oilfield remote measuring and controlling system as claimed in claim 1, is characterized in that, described superhigh pressure protective circuit is by fuse F, resistance R
1with piezo-resistance R
vbe composed in series.
3. a kind of D.C. regulated power supply that is applicable to the oilfield remote measuring and controlling system as claimed in claim 1, is characterized in that, described switching power source chip input overvoltage crowbar comprises: voltage stabilizing didoe Z
1with biasing resistor R
2, R
3series connection, biasing resistor R
4with NPN type triode T
1series connection, voltage stabilizing didoe Z
2with current-limiting resistance R
6, NPN type triode T
2series connection, NPN type triode T
1base stage be connected to biasing resistor R
2and R
3between, biasing resistor R
5two ends meet respectively NPN type triode T
1collector electrode and NPN type triode T
2base stage, voltage stabilizing didoe Z
2two ends respectively with PMOS pipe T
3grid with source electrode, be connected.
4. a kind of D.C. regulated power supply that is applicable to the oilfield remote measuring and controlling system as claimed in claim 3, is characterized in that, described voltage stabilizing didoe Z
1the voltage stabilizing value get the maximum input voltage 1-2V lower than chip.
5. a kind of D.C. regulated power supply that is applicable to the oilfield remote measuring and controlling system as claimed in claim 3, is characterized in that, the required direct voltage of described Switching Power Supply is realized by some groups of DC/DC translation circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320471490 CN203352465U (en) | 2013-08-02 | 2013-08-02 | DC stabilized power supply suitable for oil field and oil well remote measurement and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320471490 CN203352465U (en) | 2013-08-02 | 2013-08-02 | DC stabilized power supply suitable for oil field and oil well remote measurement and control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203352465U true CN203352465U (en) | 2013-12-18 |
Family
ID=49752312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320471490 Expired - Lifetime CN203352465U (en) | 2013-08-02 | 2013-08-02 | DC stabilized power supply suitable for oil field and oil well remote measurement and control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203352465U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602899A (en) * | 2016-11-28 | 2017-04-26 | 中核核电运行管理有限公司 | High-performance power supply module used for reactor core nuclear detection system of nuclear power station |
| CN109120163A (en) * | 2018-09-20 | 2019-01-01 | 重庆镭云光电科技有限公司 | Safety-type bistable pressure type socket DC power supply |
| CN109407809A (en) * | 2018-09-20 | 2019-03-01 | 重庆镭云光电科技有限公司 | Computer 5V power supply |
-
2013
- 2013-08-02 CN CN 201320471490 patent/CN203352465U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602899A (en) * | 2016-11-28 | 2017-04-26 | 中核核电运行管理有限公司 | High-performance power supply module used for reactor core nuclear detection system of nuclear power station |
| CN109120163A (en) * | 2018-09-20 | 2019-01-01 | 重庆镭云光电科技有限公司 | Safety-type bistable pressure type socket DC power supply |
| CN109407809A (en) * | 2018-09-20 | 2019-03-01 | 重庆镭云光电科技有限公司 | Computer 5V power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |
|
| CX01 | Expiry of patent term |